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3.3 - INSTALLATION IN PLACES WHERE THERE IS THE RISK OF EXPLOSION (DIRECTIVE 2014/34/EU)
The solenoid valve complies with Directive 2014/34/EU as a device of group II, category 3G and as device of group II, category
3D; consequently, it is suited for installation in zones 2 and 22 as classified in Annex I of Directive 99/92/EC. The solenoid
valve is NOT suitable for use in zones1, 21, 0 and 20, as defined in aforementioned Directive 99/92/EC. To determine the
qualification and size of the hazardous zones, please refer to standard IEC EN 60079-10-1.
If installed and subject to maintenance in full compliance with all conditions and technical instructions provided in this manual, the
device does not pose a source of specific hazards: in particular, under conditions of normal operation, it is not expected for the
solenoid valve to emit a flammable substance into the atmosphere with methods such as to originate an explosive atmosphere.
During installation and maintenance, it is imperative to comply with the Ex standards, in particular EN 60079-14. Electrical
installation must be carried out by authorised personnel in accordance with relative national regulations.
Do not install the appliance in explosive atmospheres except for the specified gas and dust groups and areas (as explained
in section 2.0 and 6.1).
The subsequent application of a non-conductive coating with a thickness of > 0.2mm on the external surface prohibits its use
in environments with potentially explosive atmospheres where group IIC Gases are present. The thickness of the coating must
be < 2mm for group IIB.
For group III it is necessary to take appropriate precautions to prevent the accumulation of electrostatic charges (e.g. cleaning
with an antistatic cloth, etc.).
3.4 - GENERIC EXAMPLE OF INSTALLATION
1. M16/RMX N.C. Manual reset solenoid valve
2. SM jerk ON/OFF valve
3. FM gas filter
4. OPSO series MVB/1 MAX shut off valve
5. RG/2MC pressure regulator
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4.0 - MANUAL RESET
To reset the solenoid valve:
• Make sure the power supply is connected;
• Close the flow downstream of the solenoid valve in order to balance the pressure between upstream and downstream when
opening.
• DN 65 - DN 80 - DN 100 - DN 125 - DN 150 without CPI (see fig. 1):
• Loosen completely and remove the protective cover (13);
• Loosen the reset pin (14) from the fastening screw (15);
• Insert the non-threaded part of the reset pin (14) in the hole provided on the hex knob (1);
• Using the pin (14):
• Turn the reset knob (1) slightly clockwise and wait a few seconds for the pressure upstream and downstream of
the valve to stabilise;
• After balancing the pressure, turn the reset knob (1) clockwise to its stroke end, when it is coupled;
• Remove the pin (14) from the knob (1) and screw it on in its original position. Alternatively to the reset pin (14), it is
possible to use a size 32 commercial spanner to turn the reset knob (1);
• Screw the protective cover (13) back on in its original place. Or seal it in that position.
M16/RMX N.C.
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6. MVS/1 relief valve
7. Pressure gauge and relative button
8. Gas detector
9. SM remote jerk ON/OFF valve lever control
10. Compensation/Vibration damping joint
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Madas Technical Manual - 2|2.1cX - REV. 0 of 1
discharge in
open air
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Aug 2019
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